tonight in "the war room," more than three weeks have passed since the sandy hook shooting. still no meaningful gun legislation. but still something is happening, the faces who will lead the fight for the remormon has begun to emerge as has the faces of those who will fight against them. some of these faces are new. some are expected, and all of them will play a role in what is going to become one of this country's most passionate and telling debates. >> jennifer: i'd like to start tonight by introducing you to christina taylor green she's an energic third grader with a passion for dancing and baseball. she's the only girl on her little league team, and girl after my own heart she has a keen interest in politics, which is why two years ago today christina taylor green went to meet her congressional representative gabby giffords. on that day the same spray of gunfire that hit giffords killed christina green. the pain of losing a nine-year-old child is simply unimaginable. but her mother is turning her own heartbreak to a call to action in an new ad today. >> the sandy hook sh